System of multiple control.



J. u; HAMMOND, In. SYSTEM OF MULTIPLE CONTROL.

APPLICATION FILED DEC. 30, 1909- RENEWED MAY 28, I913- Patented Sept. 11, 1917.

2- SHEETS-SHEET 1 J. H. HAMMOND, Jn.

SYSTEM OF MULTIPLE CONTROL.

APPLICATION mnromao. 1909. RENEWED MAY 28. 1913.

Patented Sept. 11, 1917.

2 SHEETS-SHEET 2.

- from a single sending station, and the in- STATES PATENT OFFICE.

JOHN HAYS HAMMOND, JR., 015 GLOUCESTER, MASSACHUSETTS. I

SYSTEM OF MULTIPLE CONTROL.

Specification of Letters Patent.

hipplication filed December 30, 1908, Serial No. 535,626. Renewed May 28, 1913. Serial No. 770,523.

fication, reference being had to the accompanying drawings, forming a part hereof.

,The object of my invention is toprovide a system whereby a variable number of operating mechanisms may be definitely and absolutely controlled by wireless impulses vention consists in the new and novel features of construction and combinations of parts hereinafter set forth and claimed.

, In the accompanying drawings Figure 1 is a diagrammatic view in side elevation of an apparatus embodying my invention. I

Fig. 2 is a diagrammatic plan view of the same apparatus.

A wireless impulse may be sent from any suitable sending station located at a distance from the control mechanism. The impulses are received by any suitable receiving means as an antenna 1 connected with'a coherer or similar device 2 in circuit with a relay magnet 3 and the battery 4. The armature of the relay controls a switch 5 in circuit with a magnet 6, the armature 7 of which controls a switch 8 in circuit with the main or prime motor 9 and main battery 10. The main controller 11 is operatively connected with the motor by any suitable means, as a clutch (not shown) and is provided with a plurality of contacts 12 and neutral spaces 13. The fperiphery of the controller drum 14 is pre erably provided with a lurality of stops or notches 15, one of sai notches corresponding to each set of contacts and each neutral space and adapted to be engaged by any suitable means as a catch 16 provided upon a suitable lever arm 17 operated by the-armature of the magnet 6. A switch 18 is interposed in the circuit from each set of contacts, said switch being controlled by a centrifugal governor 19 upon the shaft of the main motorand so constructed that the switch will be closed only when the motor slows down preparatory to stopping, and will afterward be opened again. .The switch can be so constructed that it will remain closed long enough to cause the secondary controllers to begzzoperated, and it and the primary controller are so designed that the circuits to the secondary controllers are not closed-when the main motor is started.

It will thus be seen that upon the sending of an impulse from the sending station it will be received by the antenna and through the connections heretofore described Wlll cause the main motor to operate which in turn will rotate the controller. In case the impulse is a short one the controller will rotate only one notch because, upon the cessation of the sending impulse the arma ture of the operating magnet will be released, thus permitting the lever arm to engage with the next succeeding stop or notch. In case, however, the impulse is continuous the controller will continue to rotate as the lever arm will be held out of engagement with the stops and consequently the controller can be caused to make one or more complete revolutions if desired. When the catch or hook seats in one of the stops or notches the circuit of the main motor is broken and when said main motor slows down the switch 18 is closed thus energizing the motor connected with the secondary controller as hereinafter described.

Each set of contacts 12 is in circuit with a secondary operating magnet 21, the armature of which controls a switch 22 in circuit with a secondary motor 23. Said motor rotates a secondary, controller 24 having a plurality of contacts 25 and neutral spaces 26. The drum 27 of the controller is provided with a plurality of stops or notches 28 adapted to be engaged by a catch or hook 29 operated by the armature of the magnet 21. A switch 30 is provided in the circuit from each set of contacts, said switch being operated by a centrifugal governor 31 upon the shaft of the secondary motor so arranged that the switch will be closed only when the motor slows down preparatory to stopping, and will afterward be opened again. These switches can be so constructed that they will remain closed lon enough to cause the tertiary controllers to e operated, and they and the secondary controllers are so designed that the circuits to the tertiary controllers are not closed when the secondary motors are started. As many secondary 55 I ondary controller in falling into the notch motors and controllers maybe; eniployid as there are sets of contacts provided upon the main controller. I I r When the main controllerhas beenactuated so as to bring one set. of contact fingers into connection with one of the secondary motors and the operation of the controller and motor is then stopped, the slowing down of the main motor willclose the switch 18 thereby energizing the secondary magnet 21. and closing the circuit of the secondary motor. The operation ofthe motor actuates the secondary controller and moves the notch out of registry with'the hook or catch 29. Consequently, although the main circuit through the switch 18 is broken,the

local circuit through the switch 22 is held closed by drum 27 and remains closed until the secondary controller has rotated at least one notch. In order to actuate the secondary controller so as" to move same an. additional notch 1t 1s necessary to cause the 1 main controller to make one complete revo lution.

Each set of contacts 25 on the secondary controller is in circuit through the contact fingers 33 witha tertiary operating magnet 34, the armature of which controls a switch 35 inlocal circuit with the tertiary motor 36. Said local circuit comprises a switch 37 in which one of the switch members, preferably formed by'a sleeve 38, is actuated by a centrifugal governor 39 on the shaft of the prime or main motor 9 and so constructed and arranged that said circuit will be closed only when the main motor is absolutely at rest. Each of'said' motors 36 rotates a tertiary controller 40 provided with a plurality of contacts 41 and neutral spaces 42. The drum of each controller is provided with fa plurality of stops or notches 43, one of said stops'or notches corresponding toi each set of contacts and each neutral space on the controller. A catch or hook, 44 operated by the armature of the magnet 34 is adapted to engage with said stops or notches.- Each set of contacts may be in circuit with a driving motor 45. connected through suitable gearing 46 with any desired mechanism.

When any one of the secondary controllers is rotated so as to bring one of the sets of contacts thereon into engagement with the contact fingers connected with one of the tertiary motors the catch of the secbreaks the circuit through the secondary motor and the slowing down of the secondary motor closesv the switch 30. Meanwhile the main motor has come to an absolute rest during the period that the secondary controller is traversing the arc from one notch to the next succeeding notch so that the .switch 37 isalso closed, thus releasing the tertiary catch, starting the tertiary motor the contact fingers connected with said and bringing the notch on the tertiary drum out-of register with the hook .or catch 44. Consequently the tertiary controller will rotate until the hookor catch seats in the next succeeding notch. No switches are provided in the local circuit connecting the tertiary controller with the operating or quaternary motor 45 and as soon as the contacts on the tertiary controller engage with motor it will. operate and continue to oper- .75

ate until the tertiary motor isrotated to its neutral position.

The switch 37 prevents any interference with the-operation of the tertiary series of motors except when the secondary controller is in operative relation thereto.

Although only one of the secondary motors is illustrated in the drawing as connected with a' series of tertiary motors it is obvious that each of the secondary motors shown may also be connected to a series of tertiary motors, and that these in turn may be. connected to a plurality of driving mo-- tors. By means of this construction a large number of mechanisms may be controlled.

. from a single sending stationand through a single main controller, and the duration of the operation of each unit of the apparatus 'is constantly under the control of the operator. It will be obvious that various changes within the skill of the mechanic may be made in the mechanism herein shown and described without departing .from the spirit of the invention, provlded .100 the means set forth in the following claims wireless impulse, means permitting a predetermined limited movement of said main controller, a plurality of secondary motors and controllers inseparate local circuits with the main controller and a switch in said local circuits adapted to be opened and closedby said motor, said secondary controllers including means permitting a predetermined movement of each of said second- 'ary controllers and limiting the movement thereof, a plurality of tertiary controllers in separate local circuits with each secondary controller and a switchrin said local circuits adapted to be opened and closed by said secs the subsidiary controllers, said main motor being adapted to be energized by wireless impulses, a switch in each of said secondary local circuits adapted to be opened and closed by said motor, and a separate switch in each of said tertiary circuits adapted to be operated by said motor.

4. A system of multiple control comprising a main controller, a motor for operating said controller adapted to be energized by wireless impulses, a secondary motor and controller in a local circuit, a switch in said local circuit governed by the main motor, a tertiary controller in a local circuit, aswitch in said local circuit governed by the secondary motor, a separate switch in said local circuit, and independent means for governing said switch independently of the main or secondary controllers.

5. A system of multiple control comprising a main controller and motor for rotating the same, a secondary'controller in circuit with the main controller, a tertiary controller in circuit with the secondary controller, and a switch in circuit of said tertiary controller controlled by said main' motor.

6. The combination with a motor of means to inaugurate the operation of said motor,

and means controlled by said motor and automatically operative to cause a continuation of, the operation of said motor for a predetermined and limited period independently of saidfirst mentioned means.

7. The combination with a rotary shaft of a contact arranged to reciprocate longitudinally thereof, means whereby said contact is caused to move longitudinally of said shaft at a' rate depending u on the rate of rotation of said shaft, an a contact arranged normally in the path of but out of engagement with said first mentioned contact and arranged to be engaged by said first mentioned contact when said shaft is rotated at a predetermined rate.

8. The combination with a motor, of

means responsive to radiant energy to inaugurate the operation of said motor, and means controlled by said motor and automatically operative to cause a continuation of the operation of said motor for a predetermined and limited period independently of said first mentioned means.

9. A system of multiple control comprising a main controller arranged to be actuated in response to radiant energy, a plurality of subsidiary controllers arranged to be initially actuated selectively as a result of the action of said main controller, and means associated with each of said subsidlary controllers and controlled thereby for causing a continuation of the operation of each of saidsubsidiary controllers for a predetermined and limited period independently' of said main controller.

This specification signed and witnessed this 16th da of December A. D. 1909.

JO N HAYsrfAMMoNn, JR. Signed in the presence of GEORGE ScImANz, Ammosr: L. OSnm. 

